i disagree with you on that one, having the game available through steam will make it easier. . .

my brother used my steam account and was able to play cs: source the same time as me, just not on the same servers. because there are thousands of servers, this doesnt appear to be a big problem

usually if you pirate a game you can't play online at all, but if someone lets you use their steam account it could make things easier for a lot of people